From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5360C433E0 for ; Mon, 22 Jun 2020 13:12:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A17ED20768 for ; Mon, 22 Jun 2020 13:12:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Rza3aMY1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728694AbgFVNMx (ORCPT ); Mon, 22 Jun 2020 09:12:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728672AbgFVNMw (ORCPT ); Mon, 22 Jun 2020 09:12:52 -0400 Received: from mail-oi1-x244.google.com (mail-oi1-x244.google.com [IPv6:2607:f8b0:4864:20::244]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99ACDC061796 for ; Mon, 22 Jun 2020 06:12:52 -0700 (PDT) Received: by mail-oi1-x244.google.com with SMTP id j189so15513157oih.10 for ; Mon, 22 Jun 2020 06:12:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qcGU7nvBRl72foMmnfzxCxyVhGZeHsJifexaVS75v3Y=; b=Rza3aMY1Yo+yqYktcrUVWa/BOjei8LvddkKoUYWWAq4RkaoAOVto5q3/Wfk8atX0ZK eG6ZtVMQ23JOclHAZq37tE1LFBQEay0d4h8QREnzX+tLaTHDfddYleL+b3b3mAR5bKh8 N+BhFAzdfC3EKuvgdyNOX24pXCM/sBVD4+r0as2/+w8lm/F51XB8y8SzvEfUs0v5ALIF qf3skkbaRj2Pl6+A5gqJkDukbFx0RvSE0gi5dJAPl7pQBoCSgy2SG70laF6Xv3SW1OXl AeOV85Ic4e9pKfRL72wMvCp6Zsrb2JUntAXc+YrTs7INEIJ/HaegoeaTEk0C5rCcv4G9 JUAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qcGU7nvBRl72foMmnfzxCxyVhGZeHsJifexaVS75v3Y=; b=p3zKdo1oel/4sAp51EOXHGaJYU/zO2lh0SFaAuMmrN8UDHHTZ+RNbEzXio/1vT3p/B +Ac2Db+UUCv94qk1/YzNi867ghyMZDS4wXW3XS0Lh8EBz30HDjtAdLIoco2GaGZjeeSD PKElN2lGQH40taaEJI1ukx+4cyA8w30fauXm6NQdXfby1mvkfHnYjwmZfTyo6AwCxskF tJUgP+2TFAxel3Prr7nkRS9GkmcgLmeK+P3xM5z4HKCGF9RkzyCHhJ3Q0L/1vTp3kpLc qqZd/MHT+iMjShQdpi8NhzpBkpDs0TouEXNyCXGnNDCpqszuQNd5+uHnt+ZVwsx+JKFY CD0g== X-Gm-Message-State: AOAM5334z3T0l7j/stJ1fpioUytl65H68AxJp281ogzGPczCOb/vaqjl cWiw/sMoM/TwblNfLvAfoHVr4CPT4PN6lQij+u11Yw== X-Google-Smtp-Source: ABdhPJxzjHByYX9BlhdruUuU+p8vDMZcooI2U2quqMiV5mzu6OY3UiQ+JK3QBL5mU6Rjjj5s2am9JE76MTziI7uDkdg= X-Received: by 2002:a05:6808:34f:: with SMTP id j15mr12828286oie.121.1592831571442; Mon, 22 Jun 2020 06:12:51 -0700 (PDT) MIME-Version: 1.0 References: <000000000000c25ce105a8a8fcd9@google.com> <20200622094923.GP576888@hirez.programming.kicks-ass.net> In-Reply-To: From: Marco Elver Date: Mon, 22 Jun 2020 15:12:39 +0200 Message-ID: Subject: Re: linux-next build error (9) To: Peter Zijlstra Cc: syzbot , Borislav Petkov , "H. Peter Anvin" , jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, LKML , Linux Next Mailing List , Ingo Molnar , Paolo Bonzini , sean.j.christopherson@intel.com, Stephen Rothwell , syzkaller-bugs , Thomas Gleixner , vkuznets@redhat.com, wanpengli@tencent.com, "the arch/x86 maintainers" , Dmitry Vyukov Content-Type: text/plain; charset="UTF-8" Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Mon, 22 Jun 2020 at 13:06, Marco Elver wrote: > > On Mon, 22 Jun 2020 at 11:49, Peter Zijlstra wrote: > > > > On Mon, Jun 22, 2020 at 02:37:12AM -0700, syzbot wrote: > > > Hello, > > > > > > syzbot found the following crash on: > > > > > > HEAD commit: 27f11fea Add linux-next specific files for 20200622 > > > git tree: linux-next > > > console output: https://syzkaller.appspot.com/x/log.txt?x=138dc743100000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=41c659db5cada6f4 > > > dashboard link: https://syzkaller.appspot.com/bug?extid=dbf8cf3717c8ef4a90a0 > > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > > Reported-by: syzbot+dbf8cf3717c8ef4a90a0@syzkaller.appspotmail.com > > > > > > ./arch/x86/include/asm/kvm_para.h:99:29: error: inlining failed in call to always_inline 'kvm_handle_async_pf': function attribute mismatch > > > ./arch/x86/include/asm/processor.h:824:29: error: inlining failed in call to always_inline 'prefetchw': function attribute mismatch > > > ./arch/x86/include/asm/current.h:13:44: error: inlining failed in call to always_inline 'get_current': function attribute mismatch > > > arch/x86/mm/fault.c:1353:1: error: inlining failed in call to always_inline 'handle_page_fault': function attribute mismatch > > > ./arch/x86/include/asm/processor.h:576:29: error: inlining failed in call to always_inline 'native_swapgs': function attribute mismatch > > > ./arch/x86/include/asm/fsgsbase.h:33:38: error: inlining failed in call to always_inline 'rdgsbase': function attribute mismatch > > > ./arch/x86/include/asm/irq_stack.h:40:29: error: inlining failed in call to always_inline 'run_on_irqstack_cond': function attribute mismatch > > > ./include/linux/debug_locks.h:15:28: error: inlining failed in call to always_inline '__debug_locks_off': function attribute mismatch > > > ./include/asm-generic/atomic-instrumented.h:70:1: error: inlining failed in call to always_inline 'atomic_add_return': function attribute mismatch > > > kernel/locking/lockdep.c:396:29: error: inlining failed in call to always_inline 'lockdep_recursion_finish': function attribute mismatch > > > kernel/locking/lockdep.c:4725:5: error: inlining failed in call to always_inline '__lock_is_held': function attribute mismatch > > > > Hurmph, I though that was cured in GCC >= 8. Marco? > > Yeah, time to upgrade syzbot's compiler. This experimental gcc 9.0.0 > still has the bug, but stable gcc 9 doesn't. For now, I think this > requires no fixes on the kernel side. #syz invalid compiler upgraded.